Internal-combustion engine.



C. D. MILLER.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JULY 31, 1912 1 ,065,46 1 Patented June 24, 1913.

2 SHEETS-SHEET 1.

W 6726666217 MLZZQZ C. D. MILLER.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JULY 31, 1912.

2 SHEETS-SHEET 2.

anuawtov airman;

inlet and an exhaust valve. together with im the core and communicates with an exhaust UNITED STATES PATENT ()FFlOE.

CHESTER D. MILLER, OF SAN DIEGO, CALIFORNIA.

INTERNAL-COMBUSTION ENGINE.

Application filed July 31, 1912.

T6 all whom it may concern: I Be it known that I, CHESTER D. MILLER, a citizen of the United States of America. residing at San Diego, in the county of San I Diego and State of Californiadiave invented l certain new and useful Improvements in Internal-Combustion Engines, of which the following is a specification. i This invention relates to internal com- 5 bust ion engines. and more particularly to an improved valve structure for such engines. The object of the invention is to provide a rotary valve adapted to serve both as an proved means for cooling and lubricating such valve, This valve may be employed in conjunction with either single or multiple cylinder engines. I

Further objects and advantages of the invention will be set forth in the detailed description which now follows. t

In the accompanying drawing, Figure 1 is a side elevation of a gasolene engine constructed in accordance with the invention. and Fig. 2- is a transverse vertical section therethrough.

Referring to the drawing. the numeral 5 designates the cylinders, 6 the pistons and the connecting rods of the engine. The cylinders (see Fig. 2) are provided with water jackets 8 of the usual and well known type. A valve casing 9 is secured in position upon the cylinders by means of cap screws 10. This valve casing comprises an outer wall 11 and inner wall 12, of a water jacket 13. In addition; this valve casing comprises a core consisting of walls 14. 15, 16 and 17. A passage 18 is formed through the core between the walls 14 and 15, and it will be seen that the wall 14 forms one side of the core. The wall 17 forms the opposite side of the core, and between this wall 1'? and wall 16, a water jacket 19 is provided. An exhaust channel 20 is formed longitudinally through pipe 21. A water pipe?! leads into the water jacket 1.) at the end thereof.

The valve proper is indicated at 23. and this valve has diametrically opposed ports 24 formed therein, there being two of these ports for each cylinder. Arranged opposite the outlet 25 of the inlet port. 18 is an inlet port 26 leading into the engine cylinder, and arranged opposite a port :27, which com municates with exhaust channel 20 is eX- haust port 28 leading from the cylinder.

Specification of Letters Patent.

Patented June 24, 191 3.

Serial No. 712,489.

The spark plug is indicatedat 29.

30 indicates longitudinally extending fric tion blocks to. which oil may be conducted by pipes 31. These friction blocks 30 lubricate valve 9.3 and also pack it to prevent escape of the gases.

.32 is the fuel supply pipe.

Rotation is imparted to the valve by means of a worm wheel 33. Motion is imparted to this worm wheel by a worm ill mounted upon a shaft 35 that is journaled in bearings 36. At its lower end this shaft carries a second worm $57 which 11ltSllt'- with a worm wheel 38 upon the main shaft 39 of the engine.

Surrounding valve 23 between two of the cylinders are t-ro expanding compression rings 40.

ll is water spare.

Friction blocks 30 have coiled springs 12 to force them against the valve cylinder.

43 are oil grooves.

through it, fuel may pass through port so into the engine cylinder. hen ports 24 come into alinement with port 28. it is apparent, that communication will be established between the cylinder and the exhaust channel 20. Since there are two ports 24, and sincethese ports are diametrically opposite each other, it follows that a single rotation of the valve will take place during eight complete strokes of the. engine. it is for this reason that a worm gearing is provided for driving the valve. This structure renders it possible to utilize a valve of this type which will travel at a comparatively slow rate of speed, thereby avoiding overheating. and consequently avoiding in large measure. the evil elfects arising from excessive deposits of carbon occasioned by the extreme heating of the lubricating oil. The friction [does 80 efficiently lubricate the valve and prev nt the escape of the gas-es under pressure past them.

I am aware of the fact that it has been proposed to use rotary valves. but 1 am not aware that a rotary valve comprising merely a cylindrical shell operating about a fixed core and within a water jacket. said core be ing constructed as herein set forth. has ever been employed. The central part of in core serves as an exhaust channel. 'This core, at the side througu which the hot exhaust gases must pass, is eliiciently cooled by the water jacket if}, while. the opposite side of the core. that. is wall l-i, is kept sufficiently cool by the passage of the gasolene vapor laden air passing througl't port 18. In addition to this, the incoming charge is forced to travel around the curved wall Since this wall is one of the walls of the exhaust channel, it follows that it will be comparatively hot and consequently the charge will be warmed as it is drawn into the cylinder. This renders it easy to ignite the charges and consequently produces a more effective engine.

While the elements shown and described are well adapted to serve the purposes for which they are intended, it is to be understood that the invention is not limited to the precise construction set forth, but includes within its purview, such changes as may be made within the scope of the appended claims.

Having described my invention, what I claim is 1 1. In a valve structure for explosive en gincs. a valve casing comprising a core, a wall spaced from said core, a cylindrical valve rotatively mounted between said wall and said core, there being an exhaust channel formed longitudinally through said core and there being an intake passage formed transversely through said core and a water jacket: formed in said core upon the side opposite the intake passage, said intake passage lying adjacent the opposite side wall of the core.

2. In a valve structure for explosive engines, the combination with acasing comprising an outer water jacket and an internal core, of a rotative cylindrical valve disposed between said water jacket and said core, said core having a longitudinally extending exhaust channel formed therethrough, and said core having a trans versely extending inlet passage formed therethrough, one wall of which is formed by a wall of the exhaust channel, said core having a water jacket formed therewith which lies upon one side of said core, said inlet passage lying upon the other side of said core 3. In a. valve structure for explosive engines, the combination with a casing comprising an outer water jacket and an internal core, of a rotative cylindrlcal valve disposed between said water jacket and said core, said core having a longitudinally extending exhaust channel formed there through and said core having a transversely extending inlet passage formed therethrough, one wall of which is formed by a wall of the exhaust channel. said core having a water jacket formed therewith which lies upon one side of saidcore, said inletpassage lying upon the other side of said core and said exhaust channel lying between said water jacket and said inlet passage.

4. In a device of the character described, the combination with a valve casing comprising an outer water jacket and an in ternal core spaced therefrom, of a cylindrical valve mounted for rotation therebetween, said cylindrical valve having diametrically opposed ports formed there through, an inlet passage extending trans versely through said core and opening upon opposite sides thereof at diametrically opposed points, a centrally arranged exhaust channel formed longitudinally through said core, said core having a radially extending exhaust port leading from said channel to the periphery of said core, and a water jacket formed with said core and lying upon the side of said core through which said exhaust port passes.

5. In a device of the character described, the combination with a valve casing comprising an outer water jacket and an internal core spaced therefrom, of a cylindrical valve mounted for rotation therebetween, said cylindrical valve having diametrically opposed ports formed t-herethrough, an inlet passage extending transversely through said core, and opening upon opposite sides thereof at diametrically opposed points, a centrally arranged exhaust channel formed longitudinally through said core, said core having a radially extending exhaust port leading from said channel to the periphery of said core, a water jacket formed with said core and lying upon the side of said core through which said exhaust port passes, said inlet passage being formed between the wall of the exhaust channel and the external wall of said core at the side of said core remote from said radially exhaust port.

In testimony whereof I atfix my signature in presence of two witnesses.

CHESTER D. MILLER.

Witnesses:

FRANK E. KELLY, J. C. HIZAB. 

